Compilare: user.cpp: In function ‘void djikstra(int)’: user.cpp:54:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < vec[nod].size(); j++){ ^ user.cpp: In function ‘int main()’: user.cpp:67:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &k, &n, &m); ^ user.cpp:69:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d", &x, &y, &z); ^ user.cpp:75:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &dest[i]); ^